The municipality of Copenhagen has a created an online platform, which allows citizens to share their visions for the city.

At the website, users can submit ideas in different categories and add them to a visual 'Idea Map',

A new urban plan for Copenhagen's inner city will be developed in the autumn of 2011, and 'Idea Map' is one of many elements put forward by the Municipality to generate input and democratize the political process.

Related: while collaborative ideation is a really good thing, it could be interesting to see the concept developed with a little more direction and urgency in line with the OpenIDEO community. See also Dear Copenhagen + I Wish This Was